The BRICS countries have____ to be a source of global economic development and essential to generations.

A．turned out

B．picked out

C．put out

D．taken out

精神恍惚，心神不宁，多疑易惊，悲忧善哭，时时欠伸，舌质淡，苔薄白，脉弦细，治法为甘润缓急，养心安神，方用（）。